{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140351",
    "entityType": "User",
    "nonce": "0x9a9c65de392e8bb1d54261c75935316ac55924ffea3c44ceae25008c776ae2ff",
    "signature": "0xa711e1a3d5525cddf1f2d0b32e5d68652abadd4fb939587eccfba7ee0a2f43e65930229ce39a71702b57cd8419c2cf8ee6daa4bee588007847baa07e943669991c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}