{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320843342",
    "entityType": "User",
    "nonce": "0x76500ccf0153acae2254d8f8ccbdd81c74e5e20d9fc36333704cfc77c294672a",
    "signature": "0x5d156b45ad439a017eb8ff8d7ed7d722aa6cf2fb126bd588ccd848e10eb7f3be4dc5ec9f7d966a66514064fff5a4e06175745231f574cc0c3f935ebf03e249241c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}