{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326101",
    "entityType": "User",
    "nonce": "0xa3f603c89d3454c9b65512a5b9385cac9e5da625d29c38f3f71696eebb499533",
    "signature": "0x98d1ea123e844fbec5f88cc4d190d3b71a0224ca7f7e33beec2aa5781002e3970eb125d366ae3fe22fa170fdab484dc0c1fa3e59996c2ebfc6055dd6f6fadd4a1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}