{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "87454",
    "entityType": "User",
    "nonce": "0x058dd91a310ac16800333cce95e7cd5d5b611f7e39a57b61bfd33f045f815788",
    "signature": "0x780d06f1774f7d788959bd62e64396e060bed848d0849e1ff7e170049f76b98b328e4a55524cb44e680bc585f993090675a1e0e771341cf5f9618b13eb40914b1c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}