{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325647",
    "entityType": "User",
    "nonce": "0x2d233807b55dcddaa36e91947ca474b9fb27f4c2cbc963b4b2aaed9dcbdb5c53",
    "signature": "0x892c37f9308d49de06004857e7dee1ed7729090267b16ff86cb0ff978e7de8485e660b3718ad7d57d42eff6c8567cb703ac4c4d0edcb0767b7734d4c702666821c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}