{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7f90f7cc264998a60a64657903e0096008e2132de8b033dcb577c83d2bbb5a0e",
    "signature": "0xa8bae1bdf0a59574e7cd6a411e51dfd9def56254610db171338db64ef9f0f319562d777c1e300f389c744d961171e27084d557f784c49799a237755b74e395991b",
    "signer": "0xC982f8B52eee7F9710Edeb184eA0a7401A3C79fC",
    "userId": "401235853"
  }
}