{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x0a4094b71a9feee243a4009a5d6d59e55a08a3976ce3ed13c8a1054a9ccd19e6",
    "signature": "0xee7aacc072d37ad4c840b95777430c2c02d66e30e45757fa33ec3cf30c17bca0451986fd2073dec6ae8492dcf1efad7f2c1bf9aaacf6578858d678626a9070701c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}