{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137722",
    "entityType": "User",
    "nonce": "0xca2f5244a01d3c0dbf6fe1f25d9bc9754cc6ea663cf5ad9940c0cc511e5a6ebb",
    "signature": "0xd39091db5edc31b0878745647161a21ba9e786cedc9e2b3cc068a0c5cbddfab744c0b1f94725f2eef8ca2ec1200c0f50da81934a807e502b2b062c3d6c4457ba1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}