{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "903",
    "entityType": "User",
    "nonce": "0x8edb18bf77c940bd86b66e54b9aa3eac942da801b373509922b2475eae5984c0",
    "signature": "0x2eda7876f148fc3eebef78d6bbee7463452a3b131e5f6ab6239d18ef27b05a0d7da462271d1c064a1f23ac39a99dbaadc57fc651de315da33d96b81e952e3fe71c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}