{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "689026715",
    "entityType": "User",
    "nonce": "0x0070654dff0d050e24fabc8c597fda3feb46921f7a47934afc11d5025ea5c357",
    "signature": "0x6062b2fcdf918eca37bfd597d2c620e2527f106fd47eab6b02c3a9851cbfafb742f5a369314b6c7b638ad3a17bb4ec5890556b5ecf4b5ba7ad1d6761cea5f7751b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}