{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa9d7f56f454e7e8a52710b87927540f890bcc2fb370e46fdbc163f10245b81d0",
    "signature": "0xb157e7e3ea99151d9a634bf5c2f33196b24ead1060d931f9f0967e3226ad847d0ecc84b931ca3159bb2f56b1f41e9311b7069aa14e62d1db3cd76e3c278db1871b",
    "signer": "0xdB18Dd74b37b66C00bF43E57F7d4139e3Bbea523",
    "userId": "613144499"
  }
}