{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0xcc0678671dd4ea7f67f7e24bf35ff5f960ba290b42754a8de9da68d2450748ac",
    "signature": "0x7f182d3bf7384f564bfcd1b5a6d08274cdc2cf60f514201adaa6372b85b9a4cf1560c73e9cb72db10228c6ffee4eb21f9b46ce002ec9b49d0be473a0f20fbf6e1b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}