{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354108",
    "entityType": "User",
    "nonce": "0x2b7c4f06a4c091bad70fce7030240216474b36023432c52a0800a609bb02b0af",
    "signature": "0xb1d3d848ccd8168e67e862c1d62dc903f981684a2e904f949acfcea6c10140204efeb75e4ed14eff14bfb22b2ce89160306f51a6162469ffa5803a9d7f255fea1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}