{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcb039b0b9533822da01c628e5697e61f3abd59f25b96fbad1de20e4cacc8138a",
    "signature": "0xeb183bc28ce650534df627735dedcd44c2484a0fbd716692dfd9335a3b545cfd1c1126b1f46f1fc18c84cfa4dba588c353353fe4676d4b3d0f4dea5529b1983a1c",
    "signer": "0xD08E735d78f9B1D9B553b1Da41a4209c791f639b",
    "userId": "51295028"
  }
}