{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309242061",
    "entityType": "User",
    "nonce": "0xd6c58bc7454ca7164a7a81be59862a39f441ea24715912f6662292cf3d19c8c3",
    "signature": "0x149be3cf739443581f19a3a52ce1679c03a899642e33afa328bc459909f7f7bb028b1cb36851e5e70a0bbc4687cb1e4b7071fb24bb594db1288884347df54a861b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}