{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353918",
    "entityType": "User",
    "nonce": "0xea030c39a701fa77ad86e4844f45fe5ff2225f9dade86fb2bcda7ef31788965e",
    "signature": "0xedb8bd943a9102583541e9efa4e3ee803f66f4e7dfcea0146cc1018c45cb1c044e0816263c6acf40b9933aa48faf0653cd19db4c30d592fc88435604cb05a7181c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}