{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3c6f72238be4212f7e0f921af6a2ba5a8a529d8a623dfe08752fdac5f1161ad",
    "signature": "0xca2e3cf1bb47ef99a760cb77c26723dedcf2ecbfb920bb2e87a3e6b93a71176d2d9570441559c294ca060dcaba6980299876fdf1cd28ea5b5200bee11fbca4311b",
    "signer": "0x63B5aB5931d5b70DB6CEcE08E6298CC38898d01C",
    "userId": "433140359"
  }
}