{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x19f65242c4832cc554e6ad4fc45901385ba5f0c230c895fbf15c654b11472043",
    "signature": "0x50f6f1ce5e6f53f4fec3894edf78a9a640520881841bfbe95a23c84c7758a04f4f19a82f8796fd1df6c8e2bd2b5b62c190b82895d994faa8bedfb43d6a84cf5c1b",
    "signer": "0x8c1bA164AE1BbD7CDae677bCb1F6C4ccbB736e22",
    "userId": "284806499"
  }
}