{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751664",
    "entityType": "User",
    "nonce": "0x0b5eecc60c3f71eaf13dc01ae116bbb7fa63e4c3ed1d16b9382516e78289db78",
    "signature": "0x52736d4e555fa3614c84661861d81b42490ac2e7b9f65c864717e9bb5381ff9c5b0f86be98588c0881c79585ed1162b1c5f0c720120910f8f5b8f2815c55ba471b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}