{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511688",
    "entityType": "User",
    "nonce": "0xdde9fb90b87052628fc88d928dcdb59be15f8378666fd1a967a493e0fe542f13",
    "signature": "0x6829075f49f4ec5859adc8d0b39a99624dca458cd61a0f3dd7bca3eb7a7f072831af5f6b368d9bd851596b583b9d668786286b73435dc423ed17dfec0d246b491b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}