{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313737",
    "entityType": "User",
    "nonce": "0xa3e571fc35ba09ead538af5837864cd6aec079f20dd40829ca7c1aba9a2550f3",
    "signature": "0xc00656bd695924afa22b385b49fa2a4eff773b48a22d9d5c10c8e72c96f2abfd6376c13ec021349ae7f12b1f95029f30a37ec3a4ca7b0c13e6b2855378d9f2a11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}