{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4872",
    "entityType": "User",
    "nonce": "0x2960889429153f05de595610924a6915d7f01f5fed90695f6ff6b0050664e47a",
    "signature": "0x6286bbcfa320c80e848c0dddfc80b337f2dd9b6bbc221c128b091d1e87d5637c2704fe0693f2c43609fdbb225b187f4b1d8e03de2e49239cd5490088b88be9d31b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}