{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1898740",
    "entityType": "User",
    "nonce": "0x86de014351afed99d76af916b325e7df4a85f87a6a7c696ee63ef84c7abbb9dd",
    "signature": "0x44f6c8de6d0b92ee1d8a761a71f0aea9433dc30fe33f05146ceddd5e537377ff075f2095adac41c45137a0dc7fd3aeb25da4d01fe4130e398a49f4fe3162000d1b",
    "signer": "0xF2c19977A72e7f63bBbD9063748E52c002b22f6b",
    "userId": "957488166"
  }
}