{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42815",
    "entityType": "User",
    "nonce": "0x8c1a8636e6bdaf374a6e68f16f70c8865048891c9dcb20a4c0494224d1f01770",
    "signature": "0xda0b61cb8f1988efa6ade9902dc04116d0894ba66c815c1f59c872fe942a39560f82eac49653df58b9e10b177ed7daf5418904cd47f7ed8f38a604182d8fcc811c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}