{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "976921855",
    "entityType": "User",
    "nonce": "0x3e5e5294958864593d985b93d128be865109d2f75dc218d5db41753e42180454",
    "signature": "0x638f9392c9b1b26439058663ec71b99c50a46e55624f7b1ec1834ed3b7f6aa293181ad1107c1ac3c3fad95daced087e382e83a0489f6f6018476f897cd4a0b6a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}