{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81238213",
    "entityType": "User",
    "nonce": "0xc9dadc88faec1ddcdca7f16286a2a10a9f0323111e3fe921da08cb7313698198",
    "signature": "0xd461f9922f1208e275b1f807442c2d6e2b51db55635fe4f156ba2106a3da002a18e57db44a4c7625fc13549604f4739d956fdc4b3288762fb57f2235fcdf18981c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}