{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60e7fd5db714ae2f964c50b5b348d00496f5821ca239dd88fad13198a4d10952",
    "signature": "0x554d4b0f7c4c90b9e7b42e2533829ba3f3a4267e13b56be9e5a6c7f89b63cd4b1271cc03ef5da7bf9a3698fc0716d780fb118e1e0cd90b1a21bdee2bb941cfa61b",
    "signer": "0xdE7D939d77F814cd2E8B2335A19e6E3d0231A45e",
    "userId": "584697991"
  }
}