{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0xc3d1871ca63381c63c0ef2bb4ce0c91318e34f6433419f6be765e7f4ba49572f",
    "signature": "0xe231809f14f9e7ab2356997a035fd0b92b9216746e6099ad872064b930cab07b5db18386cc3e492afdd3c99f797bb42a6f969461778227b0952f5ded51bc699e1b",
    "signer": "0x02B4d5531389E17effF879c0eA41e4dA46374c71",
    "userId": "117832850"
  }
}