{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17145",
    "entityType": "User",
    "nonce": "0xac9c518cfc096d6a747762bda720e3e2f91c4a005ea0a2de1414073869afd98f",
    "signature": "0xac91131a66651069895b066667bbd2d7b0375b8550510c4bb9e8d3834b99c423558a5c4f5e36f91035bcf2292d799f094e86536d45b8e7f4f146cd37196417d11b",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}