{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x239dcb4903f692cd22e655af0dd082e7c2b3e94a3e2378acbd96ff790ea1fee1",
    "signature": "0x91d5a5b2a8c7e8709cac38eb30bce69321cbe7c8eb388de0d0317a728e52f75e3920e60f82d89e211278e0b859ee5feebcd533ecb25d3673428c79895e3a25361c",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}