{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0xc1652a2a392c61bd624470fc1f54017c834c7454b5918b9e02b51c489809b5b7",
    "signature": "0x53a7ebfa121ebef538741fd561edf2cbc3e00cc471985bbc3d29e23239598a9c048d48d7942760d5c4167d4c83843dadd14220e5ebb7cfe230a78d5f30aca6bb1c",
    "signer": "0xE567D491AE5c08cc86356663b936dEE6ae821719",
    "userId": "404802700"
  }
}