{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75085",
    "entityType": "User",
    "nonce": "0x9687d556b5140f6c7ac73ae14266810187fff62e37403fc4a6b0cc6e715ab126",
    "signature": "0x14ce8542f7608ba96c18fe42b7dadac81be2242a9b6579eef0a1afffd9169e15150dd1062720f3271ff30a9c24d08b0eb86033e26e6e6db47641282ea44656021c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}