{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x157fe6540903350ee469512bbb93ca668793cb748b2663d1daaeb431c23ac9c8",
    "signature": "0x25900e798a56428a45dc9f67fdb0d3d734f2454b05d3a3f21753c31b00cb94206e7709e7d4486113b0aff4beacfb83d228bc37e995f68dde8568bb1f65c54a9c1b",
    "signer": "0x4e7Ff4DA511194F865D82936Ed0b8fB40B5B9741",
    "userId": "582626597"
  }
}