{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4464",
    "entityType": "User",
    "nonce": "0xec42fd6679e603356c97ea3296a49d8ebb8f3c4018815835b292c1054413c3de",
    "signature": "0x0fec51475ef3fa0c44e39078edc15aed512f9d618bce0a0d601421081a3b4d553df4af68030195b186ddd28f3de4ea53cb0eea376ae9bddcd73e1907bc764bc61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}