{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645278",
    "entityType": "User",
    "nonce": "0xf872ae82ecf0cbe207562dca96c249164a1be6448f37506783041b687cae87e3",
    "signature": "0xfdcc049a1f436737a0753baa24779e448e484db73cc8e2685f9072ef942b321178db942b0cd37c02118d307c2404e892af10b6570fae9d83362ae90d8e3257a71c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}