{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "741685",
    "entityType": "User",
    "nonce": "0xa35c4f87cb6eecdb8cf846883135cf666e270fd2f7cb930fbba78f4efca621a3",
    "signature": "0x663a46fea3cfcc48a17ea88a82622a7b69442d58e53149fa585c9a77785e86ac5b3534b0d80d7b969fef4fd187363bbcf7852018c79203df1a3e5003156fd4001b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}