{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x7b1e0a8656762416b693226f396a6862204026ecf95bc3dfce43422b5e59d13a",
    "signature": "0x9c317df896ca8eb73014ab56dc04e6ab3aa0273214bde3b0603cf07fa9a84358786f678d378167a6ba911fbc7f399fb508f2601364d4b3fde272fe2ab54c025f1b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}