{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16494",
    "entityType": "User",
    "nonce": "0x3c1454d032050317dd7f00dc2e3c249d0e45271dfba9f4931919ecb2875730b2",
    "signature": "0x4d62e7135f2d7206decb72e16a38dc2ae5887e4d0adab67571f44fb7d3a656354aafb27d852f22697ac8254a2c2fdac1fe2c6c8f8bd22c0d00a2d1ccca6e3a131b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}