{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "444778",
    "entityType": "User",
    "nonce": "0x1ce5e276259a68a43be729a3fc31dbe9d0b787495014731207241326a6fdcfe9",
    "signature": "0xa55b49ef5f275bb077fe450077c51336dd371d06a3b5e853e6433e643f5a2ca5484eec8c9627aa519149d4ba090fbfc1c22520d6bde359937cacdeed7763cee71c",
    "signer": "0x63762Ba099c2247aD3755af8aCb1d62705f0D5CC",
    "userId": "851444561"
  }
}