{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "994858715",
    "entityType": "User",
    "nonce": "0x8dc005ae1fa83a90f71bdcb0757cc041eca185da99efd2e1f662819131c38590",
    "signature": "0xe70e0acb89a3a91faac4d1c1a9c23ff1a4e87e6742925adbd63b7beb53a2a7c219e51bb0ea995b5c3180facef9c75571b68d555a8c6d36132f5225551e61f55b1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}