{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x665046f414c95b1eb085bc9f3a5cb7c0946b697c9eebc438e02dd53876e0d428",
    "signature": "0x501ed5388fb3f18773666a7286b50ce7876e17d4fd1515dd8d71b4e7452bbf0479f3f71e124f6230fa5f402709499e0c186e100efa5a7c9167c3d040a94f65481c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}