{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "27766",
    "entityType": "User",
    "nonce": "0xa6768237e5027fbd42edae02dcea6f5738b2d319dbfc5fe4ca6d3e35e25a3f6e",
    "signature": "0xce144c4f8ba08746de72ee3994fcdcd157b64a353e7af1117343b4503a6e02bf7cd5127732e6cf414a07c7d46ac345147144f0e6e59099fb531f7d5096d170e01b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}