{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0x4c5eac5ea8eb5d0538a3ed6fe603cb6333d783aa91e8ff67495d0a9be52ae309",
    "signature": "0x291890242e2ace6880bfcec534de651e34f6203e5ddc84c4cfae5c00955db61c72e7b6e7dd108846d50c2054be7aa000f3b490a480d810f7fff08490f28cbb0b1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}