{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1887966",
    "entityType": "User",
    "nonce": "0xefe22d0ea99e40f81e3411f1b575ff40a2ba9a5ef62ce159284eac720ccbc558",
    "signature": "0x847f7f9d5677c9008de2e3c4672a69f1e9a4762822d5d4b8404014726adec48847a9bfd20b78bfb0b540acca3fc5ea545a864953e6d0c138f0b7e412f37881ee1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}