{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x107d174675df88d01c75b71ac102a975fa2339f9aa9b9edd596830e83cfb6e0c",
    "signature": "0x9cdd5132f9bfa7f8e4b8f5a4e3a9f89bbb4cfd54131798f9519504e49fbc80462b57e8d1cd37883e71a717772d4894f755601a5c158106cb0a163db4e70f85431b",
    "signer": "0x8b3f5B8294936704dA58BaA61c1119eB8C4581CF",
    "userId": "840925301"
  }
}