{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0xc57ef3ced094c712992a4be4987bca8c404a084efe55faaf118d6e52a9f245c8",
    "signature": "0x5016a0195f0d40e5532247008d88f189a22b6809879521082834cf00d0bec4116cd5aa04304a5a3fff8abc309b425bedeb64e6227ce63c52e6face22d43393061c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}