{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43e14347198b5ae26ab06d4b7206241da290684ef68e4cb8a4852f435fd0cb43",
    "signature": "0x16268dc172de54e3370292e1888e31a9fa77f646e48d2378980d55393f453c1c460978067fbb501b1d601180fb63a1482632e8d9fb2c34a3a55033132d95efb31c",
    "signer": "0x8f77F7FE2165fBa864E751474Ad844d93fAAFaD7",
    "userId": "265585009"
  }
}