{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x51c8f8ccb43edd120a228cf49d0f7f21cf3a8ed752c4f1f41ff00fa0d506f89d",
    "signature": "0x5829b396b4d46206326844bd55a09f9419e2fcc0090d27d4cbe1d84e5e337cdb34e24396c0a1f9d7942c029cb75db620d4f7aaa12c4e004a0cedd4be3debdb4c1c",
    "signer": "0xE1Edd5A0ADcc2Ba5B73E968e3c6ceD8290B27a0C",
    "userId": "664083814"
  }
}