{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144",
    "entityType": "User",
    "nonce": "0x0c824a5e2ead95002ec3b91cd21eb0f9db272c93ca396841cb2e21615396e22b",
    "signature": "0x0671c398f198ccd9cf189de14ca9ce36a614e3981f8e1256a0c4424cac2de05411502ae017696649b44248569ceec5ad09e7d701e02ad51f502510e77f0b48a31c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}