{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345811967",
    "entityType": "User",
    "nonce": "0x58d32fb8e530a2509a581a8a8a5eaea1ca70e2211543f0b71347af95af531ffb",
    "signature": "0xaf4647444dcfd4f75540812d2f1e6236ba9df99e4347d0a69fd6050023d8328c70c8035f845f3816f4fd82fa2351653b71246fc6078d1ed948f5802f3835cf0c1c",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}