{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "363792800",
    "entityType": "User",
    "nonce": "0x3d43bf3148f1163bda57aa80f48fecd0e7ba01dc5d9830618f99efd75cda2e04",
    "signature": "0x56a087705f1df3dfe46a30a0ec416f6e8e4b50c14813b4d2bf4308266d4a26bc162aca466038645a08dae984f1b6cc970906d13201d4815ed5571c1dea0147c81c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}