{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "376757",
    "entityType": "User",
    "nonce": "0xb0e633c0783b32c864bca9b3dd27f27127e6b90a79f2eec3d0b1ee3c0c590957",
    "signature": "0x2c7694e12c893ab67f71409dc106f4acf2a1c3aae9906e901aec41f7e5119d8c3828421000159e4b67b109f1a476b1aba535d72fb9ce811826b408dcc4be90a91c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}