{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c4037ffa223337678006b30a1f1a0d1b4acb93255433de048335c4824c09a41",
    "signature": "0x4254433b7e55988171611bab313de31f33084b3651857c1f9a91226c03c7f6215b2d90dbb019c8da8d686de4f118b76d5d14e7b38b54c70cd02109fd7e2d407f1c",
    "signer": "0x044FC5a5dDb09Fd969Ac4aa606CddF360FE384dC",
    "userId": "144585121"
  }
}