{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xebe353b1e17229cb9d913026296d46cfc7c2de45efe8641e13ee0cd0b034ee96",
    "signature": "0x9757ebe6842c18dab0bef46248c4944f47863164a0a6f258c8256092219d895a73ed40daf9bb05236b1cbf5d4ddfc1e19abe31a55b3dd211f44d85f70f167e7f1b",
    "signer": "0x19C8492E30452A1491Ed1D1bC2EF39d470A34C55",
    "userId": "289578894"
  }
}