{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "94399939",
    "entityType": "User",
    "nonce": "0x3ef97f940e955388a77d578e61c16d11cd7f0634a91c28dd61ee863eabd66a58",
    "signature": "0xb4a7a8956c45362d748de77c10af4e1f398f5941265009f77a9dd99d48ad915037621403e6c8ff5c1ffceaa65e998786e6f870ecefba194c29319c60450a18e11b",
    "signer": "0x21C9b5409a415E4F0923C5378a82C85B8dd3467f",
    "userId": "575912766"
  }
}