{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb9689bf7603f7350350cdde16a5dcd4535d40ef3876cf6dd579ac28f0ed0a235",
    "signature": "0x66d97773349022762fe681b65d337395fd0fc22e3888daa49fc6421a62d344c06341aa63b481166758ca0c6a742a2a55b1cb58da2cacb7dac2b53861aa0012d21c",
    "signer": "0x475214c922FC5730b84EE8CB61E1A9C38Aac1EF3",
    "userId": "461190224"
  }
}