{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ac48b0fae308bc8509a5b64b17bbaf3f40563094e84206e4f74da9421ba0591",
    "signature": "0x467705c0a27c20479ef0f9c68049919a9cd5bfc19ebffaee518474a183daabb47d40fde56662784704e77f5f5e675ce7b1689bc30bf47883f39ca04674e0490f1c",
    "signer": "0x02Aff1eA35109189Cb2cD22bCa09A69bE6395397",
    "userId": "773128954"
  }
}