{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "250281",
    "entityType": "User",
    "nonce": "0x773f4522d49b2b354692b7581a8e13252df0232534841fdaefef5cbf292eaf1b",
    "signature": "0x6770a951dc8388230f40c9508eef106019048b1bd58ac428a2acea781e5d2bb01994d794ba35dd5ecccf5a0256ec8f9d7aebf08f69bfdcf62dfe17081513a3581b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}