{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x870a316534aebab2abd235f59e9c128d71a02d41df18a7e4d44998e92152d2e7",
    "signature": "0x3dd3685b476c881d5a508d50f414917917dbc2c1dac0cb7dc12e70429d4558806537e4b51fd1c9145100a148dff811ff8b44bfda7ddb10a0dfd69dd24d0513cb1c",
    "signer": "0x54B31a83E626e21EcAec175884EEca5C623683d9",
    "userId": "693139787"
  }
}