{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42216",
    "entityType": "User",
    "nonce": "0x78d0e543ec25b5ef376bae12354e7f194a8fff3a057575607068786b3c508cd1",
    "signature": "0x3708d1d12bdc6d5578dd2ebcb172bebba567009f27255c68417caa0c8a148a210400a21f96b07a0789e29ac0918db94940f81deaddd9a7e0772324eee5390db41c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}