{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xebfc4e8e31d48e7975ece4b06c01c425b05e13ce1c3789069e9d5aeeac689b1d",
    "signature": "0xdad09c14b7ed6819221d9fa0403be9f4ddf8577bddd37776af8a625125d59ba37d5060a16a9226e7deec88ee6911a7dfc38bdb87f1c9e431c2f94e43b41f84781b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}