{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0xb04c7482fd85f8e389e5f6d441268713c363c1e1aacd922f25d008e6730abecd",
    "signature": "0x038281280dfacb067c163769b6a786dd9cccc524b55c0632db022ffb141127612b681767dd69f4e8ad63b098753baaca3642653695ac214c1d8f0b624d561d5a1c",
    "signer": "0xF69D13Bb0FA1ab1CC531D8F0a4b8711857b7b3F1",
    "userId": "730225845"
  }
}