{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12",
    "entityType": "User",
    "nonce": "0xa15b7de5c63eb7bc23074525b5022c33d79a23c9bead4f5b530f43d46ec80e50",
    "signature": "0xf54809a60abf85dfdf0335de8bcc9fc08091835461e9b2856e7d0d2ce63e329d2aa4e1bfb18c1c78b8710afa560a9ada3b1e5bf704e6da4b517acb52e4c23d7f1c",
    "signer": "0x8fb06be829c5718Bb968af1525d910B795617ac0",
    "userId": "950478625"
  }
}