{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c645c7ec138687f54b46c45676246d86c989de9ea53dd6929d5c3bdf70d03bd",
    "signature": "0xebeb3ef5a8121cc4ae5bdae96a158030edcaee5138cca321d21bea00d43f301d68c21fc997d728186b069cad9cfd2a6f2958e5d1cf7caaf8749a228aa24afa5a1b",
    "signer": "0x108D612Ab8b098Fb5c1CCFc861D8531e2abE93Ca",
    "userId": "908696475"
  }
}