{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0d0ba7bd5af40658eff170396da7ab4c32544029c62d400c15724f62ee49704f",
    "signature": "0x15b7ec4b1883bc317590b0ef33515a82f5069ed866445196d7cb1bbb2f6ab369031cdcba9c0afb383ccdbeabe17365a8cdb8f1f580dde5ac8b3be8619101fa411c",
    "signer": "0xb85E7960F608167053c026aCdaf4819702ca3625",
    "userId": "209045286"
  }
}