{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x018777b744a054215ad28304fb3a035883759bc49ef8efe8c749dd1a44c00ba4",
    "signature": "0x28ad27fde9b2fb566ffe80020c29264728123c3d5289839fb2f715d6108afcf91bedda7b7b4e2174c1ff1d3aa979cb9aa601a9a6e094f835c9a4ee7a41a76d351c",
    "signer": "0xf165b1b731C3205Ea729A5823CB43ac0de2BE414",
    "userId": "912944740"
  }
}