{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb1d5d4d3c06ced810d3d7cd9342f41a81f2de97bde7a641b7efe04e1d34e6bdf",
    "signature": "0x8c3ae17589b86ee934e75eccf2191f4ffcaf19c83dc5dbd7047d0f659cb096400461ca909ddb26ec5a4649ac48db649c2421b139c17980c9c355c7ee35f7234c1c",
    "signer": "0x209a0CF4740270A23570cCb3267a65b0d3C37a6D",
    "userId": "188887251"
  }
}