{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x2b3a62af24916a114c9b7022f81f45b33b58b7374801e4434342142cebc0c6fc",
    "signature": "0x6287ea68e0da2db0875c03041e2165e940b817bb141aad8706f6958bc1709d0e3fe36a3a7106ff9b6ca36b78b18c8ecde8fb4ff89b373b50eddc63d07f74b1811c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}