{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0xd49178974c395a239b24edb1a1c016086ae2a55fc342de3bb8dc377db6fd33a8",
    "signature": "0x0c9d071353e1a8c8d38b85382789111132b398b7f8f6fad5de01a1d76390250a27171d0543bf2516923c5249f8e38ddde37c9268e87e9e154e405354f32dfe5e1b",
    "signer": "0x5FB1dF0c125C1F3cdda251a598Cb878a0A390F18",
    "userId": "25189733"
  }
}