{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xe30bf72b6774bd59c64500416c9d2d6419b273e44b1c4d01f5b34d80ccd44610",
    "signature": "0x70ead3b0d70d9f35aed7d68164cb017fc3c9a0ddf95a7e039f1f476ee19b95d24892581f7e102841c4054247fa36ed32606662cb3190fa44cc2af99406eba1111c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}