{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776979",
    "entityType": "User",
    "nonce": "0x19281f1e93fbeb7a0db72da1cd91c0172918ad7dc2bd0fca2b45162a2cb4fa17",
    "signature": "0x3d5c669794f1fb90b383a1fb88fd584cf7b7b4bfbd773f43476893b4cf41172f0ee5f59dbaab2466a74c6945e69ae4470c531a3970d54569c3f7ef2bde1ded9e1c",
    "signer": "0xC49C1DcF81d45f0CFfc91AE858213eA1636dff0B",
    "userId": "622856537"
  }
}