{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xca08955637bc2a5b29d5f1a9f4e4a758689523163a3523d705a374829bb167ad",
    "signature": "0xf677798ef10222e739fa7e7c0e6af49cc71428662d5ba2299653f83f83fc90b3630a56679dce3a69a133400dbe383f1ac0f3a260ba5bc4996bb882ade5be39121b",
    "signer": "0x4ffd9A9CBABd1D644808fd0097d9eA029A62DF0d",
    "userId": "32857072"
  }
}