{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343815",
    "entityType": "User",
    "nonce": "0x32d9b121fc852c1a1d4ae3d507899f5e903576b4d94b4f762befdd7227422b52",
    "signature": "0xea4c91a1afcdb1580de83b197ae340ebae1d53e67e219f09797a6d120590b65016e99f30c36d7a256c2b4a726ea34e48c4c0de8e1ec88daf2bae8b38b4260ea91c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}