{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0589fcc21ee9f33c57b57b9f87131cecb16f1da5d94f91ab1a0f2de65d8f19d6",
    "signature": "0x052a09dfaf9d31de373c7ad5b5e95c93ce208147fa3829b0e75c1fe193834fe411e935172625b4648a0a725dce97f626441277a53f5dbeba6b0c717ab6fec9f21b",
    "signer": "0x1f3C9a2A07c1F7Ae915Eee4eFA3E48f63a1Fecc3",
    "userId": "983839410"
  }
}