{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345811967",
    "entityType": "User",
    "nonce": "0x4f0c853a8dafefdb848066fc8f5226e6aed2b928883a67e5d4c9d2ba887e0bc9",
    "signature": "0xbf922d7e74e3e4336f7fae8622a162b3cf9bd0131519fd3b6ddfd9b3d08baa7c0426c5632c29e426b460ebbf278f276b43b766e8dfa062d9afa03da7f5554f5a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}