{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155643",
    "entityType": "User",
    "nonce": "0xe4f80017597f33896649e43c5ef4aed0aa49eabfd42892f3ee719146abdcee8b",
    "signature": "0xd24ed519dce0679aaa4998101c0ff8f3ed90e86955adc706a7d2b007f8767b8e051c5f489d45111b41f0c63e73583f4bddc508b70f16030d121d0deae21d17ce1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}