{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16d00be0c3f001b2529eb2fefee5ff4e0757572ac1c263cb14cc0aaaa4cc8dd5",
    "signature": "0x9e859dcbf00e7c8a7c012533b7dc55b6bf7249f566688dc742f060e11052e2e93b16809f1d6f6ad76a1d1907248f69cc6f82da96aeae39319920ac6ecced32a31c",
    "signer": "0x342d78d20f492d5d990b9fa49CCd80AE27E825B2",
    "userId": "936975763"
  }
}