{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0xe51c40fc9f29e9255b1072bfab4082526989f65262cdef0897572c7299642e33",
    "signature": "0xc4f99d50cce5773ff6ea3ae1ba76bd2540cc82c4028c7a7def95a8ea74499ea869fb5968bdcc691257acba6eff08354cdbe0ece77f5ac64c259e1908cb9f1e8e1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}