{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x2d1a28d1f8bf03524e1a5b1dc27d0f25a46339c9a41b08834adffeb3c4b8e0da",
    "signature": "0x4cce1a66c5fdaa8741ac38b6b1ad4b96eb8155210bb108897442a6281317b0352d4c3dbb7094d3e002b622f5cf8f74f907c6ef1b04d36d0342f3650a22c9648f1b",
    "signer": "0xE3cf7649E65876c1DDbc26CD279cC6773ee71317",
    "userId": "922124759"
  }
}