{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x25262a9ee1518b90fca41fba9ebec9e7ec2cb8391a567e24d9d3d14548911064",
    "signature": "0xc077c2376f765853f0895a1345cc32a87dcb03376256e8d5e189f7cc9e880c8524e4f6a1c6923064ff36ac89af888c37a2b38d546a0a9e3eb960bad2ae01398a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}