{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584186978",
    "entityType": "User",
    "nonce": "0xec8056e3a034690b4c1a25e6147ea47cb328387be34cc53a3196a466fc96fdee",
    "signature": "0x04e9e22c57a93d38ffdee43b7c85d31aa8d00e6604377aa860f8fcb93027e9a2020cd96689d75a269340c3b30873d7ecdb257633f41e4ecef152244a1f03a3291c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}