{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0x9219d7cff4e84fc976daca3334d0aaceaa2e4a036cb626bda32913223d9d03bd",
    "signature": "0xa104fca1a1f499f345c2b2cb7605d82cfa6391a0d7e4799b8b5267969cdae7ef0bf12baa8210934f257aa306ac2ed866c2f85cda3b69e7b2e49ed1209b5e66451c",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}