{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "553563228",
    "entityType": "User",
    "nonce": "0xeabb7819b03d0c40bcd293d03ebb23a65d8200d449862818cf30f5081936fb16",
    "signature": "0x05aab2b271ade878ff9dcf5377bb72a17c7a160139b0edb02d2c79b0299d9b947a48df8514a7e27b454457d823ed9c5cdbfdb7ff3ae35cd6b4caa8efaa64bc311b",
    "signer": "0xE259BBdB2fE55FfCaD58A42B573fCB285725eF1F",
    "userId": "226586343"
  }
}