{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x1d1e91ec4ea8e4f7367f828484a6fd1016992e54721b56cc5bf1da6f776ab617",
    "signature": "0xdad005e254a7411193e8bf1426f20554b7bf29024e5a61b7227a7f0fd16205f970977faa3b4b3e11ca09138a03a26d5c8ff9c98b3108dbf434fcf3e57309e8ca1b",
    "signer": "0x9ea1Ff0455AE8808164F33C1c5deCa9b9AAaF91A",
    "userId": "898121894"
  }
}