{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0x3f98af246f11d99bdaa161ad215ed3f88e112db254cdbee3ed77f2bcfb0ab551",
    "signature": "0xe6d3bb61ca3899348ef96801a8b855a3e81b39dbe0d49a8069b54f202d1ddc6863ae08d1dda8759d8d46e92431483aa291d5ae9add863abf305706707f624b9a1b",
    "signer": "0x4ebDE052FD90d737dFa0Bf87819D8bEA320AfBB1",
    "userId": "507122246"
  }
}