{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0xdfcf28f15da73e7d832ae872ec6a1c34dc0477f1eabf7a32d90bc352f9c71922",
    "signature": "0x3db2c8623a46a365f984ab304c8b27c30fa77c70b3c39eeb205647b02e723a560357dd4e1a0a314adcf2d7e7263c418a7e0f1888d1db718edf16afe9c0e0aef01b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}